题目内容
脱式计算
| 580-80×5 | (129+78)×9 | (800-187)×5 | 35×6×9 | 268+36×4. |
(1)580-80×5,
=580-400,
=180;
(2)(129+78)×9,
=207×9,
=1863;
(3)(800-187)×5,
=613×5,
=3065;
(4)35×6×9,
=210×9,
=1890;
(5)268+36×4,
=268+144,
=412.
=580-400,
=180;
(2)(129+78)×9,
=207×9,
=1863;
(3)(800-187)×5,
=613×5,
=3065;
(4)35×6×9,
=210×9,
=1890;
(5)268+36×4,
=268+144,
=412.
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